[German]The developers of the Thunderbird email client have released Thunderbird 78.14.0 as of September 7, 2021. This is a maintenance and security update for the 78 development branch.
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I have already been notified about this update by blog readers (thanks for that). According to the release notes, the following vulnerability has been closed:
CVE-2021-29991: Header Splitting possible with HTTP/3 Responses; Firefox incorrectly accepted a line break in an HTTP/3 header and interpreted it as two separate headers. This allowed a header splitting attack on servers using HTTP/3.
As a known issue, the developers list that sending an email with HTML links with spaces in the URL sometimes results in broken links (was also the case with version 78.13.0).
System requirements
The system requirements for the different operating system versions (see here for more details):
The download of the free Thunderbird is available here.
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